Pilots at Southwest Airlines have rejected a tentative contract with the carrier that would have raised their wages by 17%. Talks have dragged on for more than three years, and in November 2014 the U.S. National Mediation Board stepped in to oversee negotiations. The decision comes three months after Southwest's (NYSE:LUV) flight attendants voted down a new contract.
Understanding the Hiring “Funnel” can Help You Gauge Your Chances
In recruiting, we have what is known as a “hiring funnel” or yield model for every job, which helps recruiting leaders understand how many total applications they need to generate in order to get a single hire. As an applicant, this funnel reveals your chances of success at each step of the hiring process. For the specific case of an online job posting, on average, 1,000 individuals will see a job post, 200 will begin the application process, 100 will complete the application, 75 of those 100 resumes will be screened out by either the ATS or a recruiter, 25 resumes will be seen by the hiring manager, 4 to 6 will be invited for an interview, 1 to 3 of them will be invited back for final interview, 1 will be offered that job and 80 percent of those receiving an offer will accept it (Talent Function Group LLC).
While the earning and recording of flight hours and maintenance history is important, keeping them safe and secure is invaluable. The new Master Logbook Case from ASA protects and stores those irreplaceable records.
The main compartment will hold logbooks up to 6-1/2 inches x 11 inches. A second interior pocket provides a place to hold documents or aeronautical charts, while four clear vinyl pockets allow storage of pilot certificates, medical certificates, credit cards and other smaller paper or plastic items.
An elastic loop on the inside will hold a pen or slim flashlight. The hook and loop closure system keeps contents secure and a contrasting blue inner lining makes it easy to find items inside, ASA officials note.
The majority of general aviation aircraft use what’s referred to as a reciprocating engine. Mechanical energy is created through the back and forth movement (hence the name reciprocating) of pistons located in each cylinder which in turn drive a crankshaft that is directly connected to the propeller creating the required thrust. In the figure below you can see the major components of your typical reciprocating engine.
A spark ignition four-stroke piston engine is the most common variant of the reciprocating engine that you will find in training aircraft. Four-stroke refers to a complete engine cycle, all four stokes must be accomplished in order to turn chemical energy (fuel) into mechanical energy (thrust). The four strokes are: Intake, Compression, Power, and Exhaust.
As the piston starts a downward travel it allows the intake valve to open inducing the fuel and air mixture into the top of the cylinder. You can essentially think of this as the piston sucking in the fuel/air mixture.
As the piston begins it journey back upwards the intake valves close and the piston compresses the fuel and air mixture in the cylinder. This increases the pressure and temperature of the mixture which will in turn create a higher energy output in the next step.
The now compressed fuel/air mixture is ignited by the spark plugs causing a controlled burning in the cylinder. The burning creates an enormous increase in pressure abruptly forcing the piston back in a downwards motion. This is what creates the immense power to turn the crankshaft.
This final stroke is used to purge the cylinder of the burned gasses within. As the piston begins its final journey back upwards to the cylinder head the exhaust valve opens allowing the burned gasses to escape out of the cylinder.
And the process begins all over again. To allow for smoother operation and continuous power output the engine contains a number of cylinders where the above cycle takes place. The power stroke of each cylinder is timed to occur at different positions then the others; therefore not every cylinder is timed where the power stroke occurs at the same moment. As the transfer of power is more evenly spread out the engine is much more capable of running smoother with less vibration.
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